Darley, J. M. (1981). Psychology. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Darley, John M. Psychology. Englewood Cliffs, NJ: Prentice-Hall, 1981.
Lua MLA (9ú heag.)Darley, John M. Psychology. Prentice-Hall, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.